UHMWPE textiles and composites

Khan, Ashraf Nawaz; Gupta, Mohit; Mahajan, Puneet; Das, Apurba; Alagirusamy, R.

doi:10.1080/00405167.2022.2087400

Cited by 8 publications

(1 citation statement)

References 246 publications

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“…Their high level of ballistic protection at a low weight allows to meet the high requirements on the weight of ballistic systems or to provide the user of individual ballistic protection (ballistic vests and helmets) with the necessary level of protection and increased comfort. In addition, UHMWPE materials have the potential to contribute to environmental protection by replacing heavy conventional materials, reducing carbon emissions and increased recyclability [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of thermo-oxidative ageing on changes of physical-mechanical parameters of aramid and UHMWPE laminates

Beránková,

Mikulíková,

Křest’an

2024

J. Phys.: Conf. Ser.

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This work is focused on monitoring of the effect of thermo-oxidative ageing of laminates on their physical-mechanical parameters, such as tensile strength, tensile modulus of elasticity, flexural strength, flexural modulus of elasticity and hardness. Changes of mentioned parameters were observed on two types of laminates based on aramid and two types based on UHMWPE (Ultra High Molecular Weight Polyethylene). The laminates were exposed to the accelerated thermo-oxidative ageing under higher temperature in the presence of atmospheric oxygen. The aim of the work was to find the physical-mechanical parameter with the greatest changes caused by thermo-oxidative ageing. This parameter was consequently chosen for the prediction of laminates lifetime. From the obtained results, it can be seen that aramid laminates show a significantly higher temperature resistance compared to UHWPE-based laminates.

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Section: Introductionmentioning

confidence: 99%

Effect of thermo-oxidative ageing on changes of physical-mechanical parameters of aramid and UHMWPE laminates

Beránková,

Mikulíková,

Křest’an

2024

J. Phys.: Conf. Ser.

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Influence of sequential melting and sintering process on morphology development and performance properties of ultra‐high molecular weight polyethylene/low‐density polyethylene blends

Shandilya,

Ghosh

2024

J of Applied Polymer Sci

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Blending ultra‐high molecular weight polyethylene (UHMWPE) with a low molecular weight polyolefin is a well‐established technique to improve its processability. The binary blends of UHMWPE and low‐density polyethylene (LDPE) were prepared with varying LDPE content (10%, 20%, 30%, 40%, and 50% by wt.) leading to the formation of a single polymer composite system (SPCS) as melting and sintering followed preferential stages during mixing. Interestingly, the sequence of either “melting followed by sintering” or “simultaneous sintering and melting” depends on the LDPE content in the blend, resulting in unique blend morphology. Separate melting peaks for the blend's constituents were observed in thermal characterization, showing the blend's immiscibility, while intermediate peaks showed moderate miscibility in the melt state. Due to the high entanglement density, UHMWPE retained a solid‐like structure and showed an intense viscous nature even above the melting point in rheological characterization. Typically, the UHMWPE samples are fabricated by boundary fusion between particles called sintering. At LDPE content higher than 30 wt.%, the sea island structure was visible in morphological analysis, and the preexisting cavities reduced the tensile modulus by 54% in the blend, along with decreased elongation at failure (250%–100%). Similarly, the flexural modulus was reduced by 34.7% in the blends, along with the decreased flexural strength. Interestingly, the decrease in performance properties occurred in two steps over the range of LDPE content. Thus, it was clear that 30 wt.% of LDPE in the UHMWPE/LDPE blend represented the critical concentration for controlling melting and sintering sequence to develop specified morphology and performance properties. These blends have the potential for biomedical application as well as for the development of foam products, which is the further scope of the present study.

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Facile fabrication of luminescent ultra‐high molecular weight polyethylene fibers based on novel alkyl‐substituted 1,8‐naphthalimide fluorescent dyes

Wu,

Ye,

et al. 2024

J of Applied Polymer Sci

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Ultra‐high molecular weight polyethylene (UHMWPE) fiber, with excellent light resistance, and chemical resistance, is one of the most important high‐performance fibers. However, the high hydrophobicity and crystallinity make it difficult to color, restricting the development of colored fluorescent UHMWPE protection materials. In this study, three hydrophobic fluorescent dyes (NC4, NC8, NC16) for fluorescent dyeing of UHMWPE were developed by introducing alkyl substituents of different lengths (butyl, octyl, and hexadecyl) and polar cyano groups onto 4‐NH‐1,8‐naphthalimide fluorescent chromophore. The relationship between the structures and the application performance was studied, and theoretical calculations were combined to explore the influence of the substituents on the spatial and electronic effects of fluorescent dyes. With the extension of the alkyl chain, the dye‐uptake rate and building‐up property was enhanced, and the equilibrium dye‐uptake rates for NC4, NC8, and NC16 were 18.21%, 93.22%, and 62.96%, respectively. NC8, which was proven to have high hydrophobicity and maximum dipole moment, exhibited the highest dye‐uptake rate. The dyed UHMWPE fabrics exhibited strong yellow‐green fluorescence. This study provides a facile strategy for constructing luminescent UHMWPE protection materials.

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UHMWPE textiles and composites

Cited by 8 publications

References 246 publications

Effect of thermo-oxidative ageing on changes of physical-mechanical parameters of aramid and UHMWPE laminates

Effect of thermo-oxidative ageing on changes of physical-mechanical parameters of aramid and UHMWPE laminates

Influence of sequential melting and sintering process on morphology development and performance properties of ultra‐high molecular weight polyethylene/low‐density polyethylene blends

Facile fabrication of luminescent ultra‐high molecular weight polyethylene fibers based on novel alkyl‐substituted 1,8‐naphthalimide fluorescent dyes

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